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Host-symbiont stress response to lack-of-sulfide in the giant ciliate mutualism

Fig 5

Symbiont response to sulfide starvation compared to freshly collected colonies.

Box-and-whisker plots comparing orally (A, C, E, G, I) and aborally (B, D, F, H, J) located symbionts on microzooids of following parameters: percentage of symbiont coverage on host outer surface (A, B), number of symbionts per 70 μm² host surface area (C, D), volume of individual symbiont cells (E, F), cell elongation factor (ratio of symbiont length to width) (G, H), and frequency of dividing cells (FDC, ratio of dividing to total symbiont cells) (I, J). The box in the box-and-whisker plots shows the interquartile range with the median. The whiskers extend to the most extreme data points that are no more than 1.5 times the interquartile range from the box. All data were compared with the Wilcoxon-Mann-Whitney test and proved significantly different (99% significance) between in situ conditions and 48 h oxic experiments.

Fig 5

doi: https://doi.org/10.1371/journal.pone.0254910.g005